Lock



1 5,139 S 9 a. D. FULL LOCK Filed July 50 1923 Patented Sept. 9, 1924.

GEORGE 1). FULL, or wanxaeangrnunors DOCK.

Application fllediluly 80, 1823. Serial No. 854,571.

To all whom it may concern:

Be it known that I, GEORGE D. FULL, a citizen of the United States, residin at Waukegan, in the county of Lake and tate of Illinois, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to improvements in permutation or key-less locks, of the pad-lock type, and is an improvement on, or embodies improvements over the lock disclosed in. Letters Patent No. 1,369,850, dated the 1st day of March, 1921, and issued to John I. Steen of Waukegan, Illinois.

is the provision of means to prevent the combination of the lock being unlawfully or unauthorizably acquired (by the sense of hearing or feeling) in turning the tumblers thereof, as can be done in the locks constructed according to the above mentioned patent, aswell as, in other combination looks, as is well known.

My invention also contemplates as one of its objects and one of its advantages over said patented structure, the provision of means whereby the shackle of the lock will be held in its locked position more securely against being pried open. I In addition to the above mentioned objects and advantages, m invention includes those set forth in the a oresaid patent, and is quite similar thereto in its construction.

The invention consists in certain peculiarities of the construction, novel arrangement and combination of the various parts thereof as will be hereinafter more fully set forth and specifically claimed.

In the accompanying drawing, which serves to illustrate an embodiment of the invention,.

Fig.1 is a face view of the lock showing its parts in locked positions. 1

Fig. 2 is a face view with the dinitaand operating knob removed but showing the parts in position for the release of the shackle.

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 2 looking in the direction indicated by the arrows.

Fig. 4 is a view in side elevation of a poation of one of the prongs of the shackle, an

The'main object of the present invention- .the parts to assume the Fig. 5 is a group view showing some of the members comprising the lock in detached perspective relation to one another.

Corresponding numerals of reference refer to similar parts throughout the difierent views of the drawing. The casing of the lock is indicatedin the difi'erent'views of the drawing by the reference numeral 10 and as shown in Fig. 5, has in its wall a pair of slightly elongated openings, 11 for the reception and operation of the prongs 12 and 14 of the shackle 13. One of the prongs, for example, the prong 12, is provided at its free end with a laterally extended lug 15 and opposite said lug with a beveled portion 16 for the purpose to be resently explained. The casing 10 is pre erably annular in shape and has one of its ends closed and its other end provided on its inner surface with an annular shoulder 17 from which is upwardly or outwardly extended a reduced portion 18 of the wall of the casing, which construction is employed for an important object, as will be below explained.

- 'Snugly fitted in the casing to fit on the bottom or closed end thereof is a disk20 which has at its periphery a sleeve or loop 21, which is located in alignment or register with the opening 11 in the casing, in which the rong 12 of the shackle operates, in sucli a manner that the prong 14 can be inserted through the sleeve and from thence through the opening 11' adjacent thereto and moved outwardly from the casing until the lug or projection 15 on the inner end of the prong 12 rests against the sleeve 21 thereby preventing u ward or outward movement of the shack e. When 1n this position, it is obvious that the prong 14 can be turned so as to registeror al gn with the other opening 11 of the casing where it will be in place to enter the same by pressing the shackle inwardly to cause positions shown 1n Fi 2 of the drawing.

he disk 20 can be secured to the bottom I or closed end of the casing 10 in any suitable manner and has extended centrally therefrom a spindle 22 which is by preference riveted to the disk 20 and is of sum 20 is provided near the lower end of the sleeve 21 thereon with a recess 24: for the reception of the rejection on the prong of the shackle w on the same occupies the position to permit of the prong 142 being freed from its engagement with the casing, as will be understood by reference to Fig. 2 of the drawing.

By reference to Figs. 2 and 5 of the drawing, it will be seen that the s indle 22 is provided with a longitudina ly flattened portion 28 for cooperation with the fiattened portion 28 in each opening of each of the spacing members or washers for the tumblers, to revent said washers turning on,tl1e spind e. Located on the upper or inner surface of the disk and surround ing the spindle 22 thereof, is the base or lower tumbler 29 which is provided in its periphery with a recess 30, and on its upper surface with a pin or projection 31 which is located between the opening 32 in said turnbler and its peri hery, all of which will be clearly seen an understood by reference to Fig. 5 of the drawing.

Mounted on top of the tumbler 29 is a spacing member or washer 33 which surrounds the spindle 22 and is in the form of a ring or washer and has its inner periphery flattened as at 28 to engage the flattened portion 20 of said spindle to revent the washer turning thereon as be ore stated. Located on the upper surface of the member 33 is an intermediate tumbler 35 which is of the same construction as the tumbler 29 except that the tumbler 35 has projecting pins or projections 35 and 37 extending from its op osite faces as is clearly shown in Fig. 3 of the drawing.

Mounted on the upper or outer surface of the tumbler 35 is another spacing member or washer 38 which is of the same construction as the member 33 and above described. On the upper or outer surface of the last named spacing member or washer is mounted the uppermost or outer tumbler 39 which has in'its periphery a recess 40 to receive an extension 41 on one end of the locking awl of the device when the parts of the ock are placed in the osition they will assume when the shack e is unlocked. The tumbler 39 is provided on its outer or upper surface with a cylindrical projection 41, see Figs. 2 and 3, which has an opening 42 to receive the outer ortion of the spindle 22 on which the turn ler and its projection 41 is closely titted.

As is clearly shown in Fig. 3, the projection 41 extends through the central opening 23 of the dial plate 43 which has a graduated scale at surrounding said openin This dial late is of sutlicient size to t snugly in t e annular and reduced portion of t e wall of the casing 10 and to rest on the shoulder 17 thereof, in which position i eoaiee it willbe firmly held by means of an inturned head or flange 45 produced by spinning the upper portion of the reduced part 18 of the Wall of the casing over said dial plate.

It will be seen and readily understood by reference to Figs. 1 and 3 of the drawing, the dial plate 43 is provided at suitable spaced-apart positions on the graduated scale 44 with a series of outward projections 46 which are by preference formed by being embossed thereon, that is, by forcing said projections outwardly on the outer surface of said plate. Firml fitted on the outer portion of the projectlon 41 of the tumbler 39 is a cap or knob 47. which has on its inner portion an annular flange 48 provided with an indicator 4:9 to be used in pointing out the numbers or graduated marks of the scale 44: on the dial plate. The cap 47 may be milled on its periphery so as to be readily turned to operate thelock mechanism.

By reference to-Fig. 3, it will be seen that the tumbler 39 has on its lower surface near its periphery a downwardly or inwardly exten ed projection 50 to ngage the upwardly extended pin 37 on the intermediate tumbler. The tumbler 39 also has an annular shoulder 51 from which rojects upwardly an annular portion 52 w ich is of slightly greater length than the thickness of the dial plate, which plate surrounds said annular portion and rests on the shoulder 51 as shown in Fig. 3 of the drawing. At the upper portion of the annular part 52 thetumbler 39 is provided with another shoulder 53 on which the base of the knob or cap d7 rests. By this arrangement it is obvious that the spun bead or flange 45 will hold the dial p ate and the other parts of the lock against dislocation without great difficulty,

Pivotally mounted on a pin 54: secured to the disk 20 on the opposite side of the spindle 22 from that on which the sleeve 21 is located is a locking and releasing pawl for the shorter prong 14 of the shackle. This pawl is designated as a whole by the reference numeral 55and as is clearly shown in Figs. .2 and 5 of the drawings, is somewhat in the shape of a bell-crank-lever; that is, it has an arm 56 extended from its pivot away from the prong 14: of the shackle and an other and longer arm 57 extended from its pivot 54: betweenthe group of tumblers and the opening 11 in the casing for the reception of the shorter arm 14 of the shackle.

The shorter arm 56. of this locking and releasing pawl has interposed between it and the wall of the casing 10 a coil spring 58 which. normally holds the pawl in the position shown in Fig. 2 of the drawing. At its extremity or free end the arm 57 of the pawl is provided with an extension 41 directed towards the spindle 22 and is employed for the purpose of entering the reupper end the arm 57 of the pawl is provided with an angular projection 59 for en-' gagement with an angular recess 60 in the.

surface of the prong 14 adjacent the other prong of the shackle. As is clearly shown in Figs. 2 and 4 of the drawing, the end of the shackle 14 is downwardly and outwardly beveled as at 61 for the purpose of causing it to slide on the upper portion of the angular projection 59 of the awl when the prong 14 of the shackle is being inserted into the opening of the casing therefor.

An important feature of the invention is that the pawl is of such construction and so located that it .will constantly be out of contact with the tumblers, (except when it shall have been actuated by the release of the prong 14:) thus preventing the combination of the lock being ascertained tactually or by hearing. a v

In order to release the shackle, the tumblers of the lock are turned through theinstrumentality of the turning knob 47, to predetermined positions until the releasing-recesses of the tumblers are brought into register with one another as shown in Fig. 2, when it is obvious that by pulling the shackle outwardly and one wall of the angular recess 60 acting against the lower portion of the angular projection 59, will force the pawl 55 towards the tumblers and the projection 41 of the pawl into the recess of the tumblers, whereby the projection 59 will be freed from the recess 60, thus enabling the shackle as a whole to be positioned about as shown by dotted lines in Fig. 2 of the drawing. As soon as the projection 59 is released from the prong 14, the spring 58 will cause the pawl 55 to assume its normal position or that shown in Fig. 2, when it will be understood the upper angular portion of the projection 59 will be located so as to be in the path of the beveled end 61 of said prong.

To look the shackle, it is only necessary 'to press the same inwardly of the casing,

when the beveled portion 61 will slidably engage the upper portion of the projection 59 and cause the longer arm 57 of the pawl to be forced towards the tumblers until the apex of the projection 59 shall have passed from the beveled portion'61 when it is manitest the spring 58 will cause outward movement of the arm 57 and the engagement of the projection 59 with the recess of the shorter prong of the shackle.

The operation of setting the combinations of the lock is so well understood by those skilled in the art that it is deemed unnecessary herein to explain the same, and, besides. this subject is fully set forth in the above mentioned patent.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is combination with a casing having a pair-of openings, of a shackle having one of its prongs longer than the other, the shorter prong provided with an angular recess near its end and having its end beveled, said longer prong being rotatably and slidahly mounted in one of said openings and having means to restrict its movement outwardly, said shorter prong adapted for insertion into and withdrawal from the other of said open-. ings, a plurality of superimposed and spaced imparting rotary movement one to another,

a locking and releasing pawl pivotally mounted in the casing near the end of the shorter prong of the shackle, said pawl havmg an arm extended between the tumblers.

and the opening in the casing .for said shorten prong and having at its end an inwardly extended projection to fit in said recesses of the tumblers when in register and on its outer surface an angular projection for engagement with the beveled end and angu-v lar recess of said shorter prong, means connecting the pawl and casing for normally holding the pawl out of contact with the tumblers and in looking engagement with the shorter prong of the shackle, a dial plate surrounding a portion of the outer tumbler and closing the end of the casing adjacent to said tumbler, and an indicator for regis- 1. In a lock of the class described, the v tering with the graduations on the dialmounted in one of said openings and having means to restrict its movement outwardly, said shorter prong adapted for insertion into and withdrawal from the other of said openings, a plurality of superimposed and spaced disk-tumblers centrally mounted in the casing for rotation and each having a recess in its periphery and co-operating means for imparting rotary movement one to another, a locking and releasing pawl pivotally mounted in the casing nearthe end of the shorter prong of the shackle, said pawl having an arm extended from its pivot between the tumblers and the opening in the casing for saidshorter prong and having at the end of said arm an inwardly extended blers when in register and on its outer surprojection to fit in said recesses of-ihe tum- I face an angular projection for engagement with the beveled end and angular recess of said shorter prong, the pawl also having p tumbler and closing the end of the casing 10 (1 adjacent to saiol tumbler, and an indicator another arm extended from its pivot away fromthe shorter prong, a spring interpose between the last named arm and the casing for normally holding the pawl out of contact with the tumblers in lacking engagement at meatae with the shorter prong of the shackle, a dial late surroundin a portion of the outer for registering with the graduations on the dial plate. 

